Helps conserve energy.

Use the term to describe the event.

Muscle fiber or gland cell that responds to the efferent impulses by contracting or secreting

facial expressions, tear secretion and saliva production

Innervates the liver, heart and genitals.

Once muscle spindles are activated in the stretch reflex, what type of input does the receptor provide to the control center?

Muscle fibers remain relaxed if there are few calcium ions in the sarcoplasm.

What helps us regulate our internal environment-

Some neurotransmitters (NT) can act like hormones.

Which is an example of positive feedback-